Combined latch and lock.



No. 638,604. Patented Dec. 5, I899. J. STEVENSON.

COMBINED LATCH AND LOCK. 7

(Application filed. July 5, 1899.) (No Model.)

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rTnn STATES PATENT nron.

JOSEPH STEVENSON, OF ESSENDON, V IOTORIA.

COMBINED LATCH AND LOCK.

SPECIFICATION forming part of Letters Patent No. 638,604, dated December5, 1899.

Application filed July 5, 1899. Serial No. 722,849- (No model.)

To aZZ whom it may concern:

Be it known that I, JOSEPH STEVENSON, builder, a subject of the Queen ofGreat Britain and Ireland, and a resident of 3 Agatha street, Essendon,in the Colony of Victoria, have invented a certain new and usefulOombination Latch and Look, (for which I made application forprovisional protection in Victoria, dated and filed February 28, 1899,and numbered 15,9l2,) of which the following is a specification.

The object of my invention is to provide a cheap yet effective lock fordoors and other purposes which shall have but few parts. These, thoughnot liable to derangement, are of such a simple character that they canbe easily assembled. Only one boltis used, which acts for both latchingand locking the door, and the key instead of throwing thebolt simplyoperates an eccentric. It is either a right or a left hand lock and onlya handle-hole (no keyhole) has to be made through the door.

Referring to the drawings which form a part of this specification,Figure 1 represents a perspective view showing the interior of the lockwith one of the handles and the plates of the shell removed. Thedriving-key is in the keyway in the follower and is operating the same,and the door is therefore latched. Fig. 2 shows the lock in sectionattached to a door. The driving-key is not operating the follower, andthe door is therefore locked. Fig. 3 is a perspective View, on a smallerscale, of the key. Fig. 4 is a perspective view of the spring, one endof which is attached to the bottom of a collar. Near its middle it isforced outwardly by an eccentricrod, hereinafter described. Thedriving-key is not protruding from the circumference of the collar, butis in grooves therein.

Similar letters of reference indicate similar or corresponding partswhere they occur in the several views.

Ais the lock-shell, through which passes a tubularspindle B, that alsopasses through the door and is capable of rotating in either direc tion.On either end of and secured to the spindle are the knobs O. In thecenter of the hollow spindle B and capable of rotation therein in eitherdirection is a rod or cylinder D, Fig. 2, hereinafter called theeccentric-cylinder, which has an eccentric portion E, against whichbears the inner end of a radially-movable slide-block H, that passesthrough holes in the spindle and in the collar J, surrounding andsecured to the spindle within the casing. The outer end of this slide Hbears against the inner side of a spring G, which is curved partlyaround the collar J, and one end of the spring is secured to the bottomof the collar by a rivet K, while its other free end transfixes a slideor locking-dog M. so bent that it always tends to force the dog M inwarduntil the spring and dog are forced outwardly by the slide H in a mannerhereinafter described. The dog M travels backward and forward in radialgrooves in the sides of plates or flanges L of collar J. The collar J issurrounded by a circular yoke N, which is provided with radial lugs P P,adapted to engage studs Q Q on the arms R R of the bolt-frame. When thedog M is forced outwardly until its outer end engages in the keyway O inthe yoke N, the bolt S can be moved by rotating spindle B.

From the foregoing it will be seen that when the hollow spindle B isturned and the dog M is in the keyway O of the yoke N,.as shown in Fig.1, the bolt S can be withdrawn. The bolt is returned and kept shot bythe boltspring T, as usual. hen the eccentric-cylinder is turned in oneposition, the eccentric E forces slide H outward, thereby causing springG to force dog M into engagement with slot 0 in yoke N, and then theyoke N will turn with the spindle and the device can be used as a latch.When the eccentric E is turned to the opposite position, thespring Gforces slide H inward and withdraws dog M from slot 0, so that the yokewill not turn with the spindle and the device will be locked.

To look the door, the eccentric-cylinder D is properly turned inside thehollow spindle by passing a key V through one of the keyholes in theknobs O. The door-key is fiat, as shown, (though it maybe of anysection,)

and has at its inner end two projections W.

There are also on its sides two or more recesses or bays which agreewith wards made around the internal circumference of the ward-cylindersX within the spindle. The ward-cylinders extend from the ends of theeccentric-cylinder D to the cap-pieces Y and prevent the longitudinalmovement of the ec- Spring G is centric-cylinder D therein. The number,conformation, and disposition of the wards in these cylinders will varywith conditions. When the eccentric is inthe position as shown in Fig.2, the door is locked, since the spindle can rotate without moving thefollower.

As shown in Fig. 1, the yoke N has a third arm E, which is adapted tobear against an abutment A on the bolt-frame and prevent the bolt beingprized backwardly by violent means. When, however, the yoke is operatedby the dog M locking the collar to the yoke, the third arm is partiallyrotated out of the way of the said abutment.

The alarm attachment consists of astriking plate or ring 13, secured tothe hollow spindle or to one of the faces of the collar J. Upon this arethe striking-arms O O, which when the handle is rotated make contactwith one arm of the three-armed pivoted lever D. This lever is situatedbeneath the bell-spring E, above which is the bell-push F, connected tothe hammer of a bell G, attached to the door or to the lock.

The operation of my lock is as follows: When used as a latch, the boltis normally, as in all looks, shot; but when it is desired to lock thedoor the bolt is prevented from being withdrawn by the third arm shownand the key V is inserted and the spindle turned until the eccentric-Ehas permitted spring G to disengage dog M from yoke N.

' The spindle can then rotate without in any way affecting either theyoke or the bolt, but it rings the bell, and thereby either alarms theburglar or burglars or informs those inside that some one desires toenter.

Having thus described my invention,what I therefore claim as new, anddesire to secure by Letters Patent thereon, is

1. The combination of a rotatable spindle, a collar thereon, a yokesurrounding the said collar, a radially-movable dog adapted to lock saidyoke to the collar, and a curved spring attached to said collar adaptedto withdraw the said dog from the yoke, and devices within the spindlewhereby it can cause the spring to throw said dog into engagement withthe yoke.

2. The combination of a rotatable spindle, a collar thereon, a yokesurrounding the said collar, a radially-movable dog adapted to lock saidyoke to the collar, and a spring attached to said collar adapted towithdraw the said dog from the yoke, an eccentric within the spindle,and a radially-movable slide operated by said eccentric adapted, whenthe eccentric is in one position, to cause the spring to throw said doginto engagement with the yoke.

3. The combination of a rotatable spindle, an eccentric therein, a yokesurrounding the spindle and adapted to engage and operate thebolt-frame; a bolt-frame provided with lugs adapted to engage arms onthe yoke, and an arm on said yoke adapted to prevent the retraction ofthe bolt when the yoke is disengaged froin the spindle; with a dog forlocking said yoke to the spindle, and devices operated by said eccentricfor controlling the position of said dog.

4. The combination of the spindle, the eccentric therein, theward-cylinder within said spindle adapted to be locked to the eccentricby a key, the yoke surrounding said spindle, a radially-movable dogadapted to lock the said yoke to the spindle, means for moving said doginward, and means controlled by the eccentric for moving the radial dogoutward, substantially as described.

5. The combination of the spindle, the eccentric therein ,theward-cylinders within said spindles adapted to be locked to theeccentric by a key, the yoke surrounding said spindle, aradially-movable dog adapted to lock the said yoke to the spindle, meansfor moving said dog inward, and means controlled by the eccentric formoving said dog outward; with a bolt-frame adapted to be operated bylugs on said yoke, and an arm on said yoke adapted to positively lockthe bolt when the sliding dog is disengaged from the yoke.

6. The combination of the spindle, the eccentric therein, theward-cylinder Within said spindle adapted to be locked to the eccentricby a key; a flanged collar attached to the spindle, the curved springattached to said collar, the sliding plate playing through the spindleand interposed between the eccentric and said spring, the yokesurrounding said collar, and the dog mounted on said spring adapted tobe engaged with said yoke when the sliding plate is projected by theeccentric.

7. The combination of the spindle, the eccentric therein, theward-cylinder within said spindle adapted to be locked to the cylinderby a key; a flanged collar attached to the spindle, the curved springattached to said collar, the sliding plate playing through the spindle,interposed between the eccentric and said spring, the yoke surroundingsaid collar and the dog mounted on said spring adapted to be engagedwith said yoke when the sliding plate is projected by the eccentric,with the sliding-bolt frame operated by said yoke, and an arm on saidyoke adapted to positively lock the bolt-frame when the yoke isdisengaged from the collar, substantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

JOSEPH STEVENSON.

lVitnesses:

EDWIN PHILLIPS, CECIL W. LE PLASTRIER.

